1. (n.) The act of uniting or joining two or more things into one, or the state of being united or joined; junction; coalition; combination.

2. (n.) Agreement and conjunction of mind, spirit, will, affections, or the like; harmony; concord.

3. (n.) That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league; as, the weavers have formed a union; trades unions have become very numerous; the United States of America are often called the Union.

4. (n.) A textile fabric composed of two or more materials, as cotton, silk, wool, etc., woven together.

5. (n.) A large, fine pearl.

6. (n.) A device emblematic of union, used on a national flag or ensign, sometimes, as in the military standard of Great Britain, covering the whole field; sometimes, as in the flag of the United States, and the English naval and marine flag, occupying the upper inner corner, the rest of the flag being called the fly. Also, a flag having such a device; especially, the flag of Great Britain.

7. (n.) A joint or other connection uniting parts of machinery, or the like, as the elastic pipe of a tender connecting it with the feed pipe of a locomotive engine; especially, a pipe fitting for connecting pipes, or pipes and fittings, in such a way as to facilitate disconnection.

8. (n.) A cask suspended on trunnions, in which fermentation is carried on.

Anschluss Bund Rochdale cooperative abutment abuttal accompaniment accord accordance addition adjoiningness adjunct affairs affiliation affinity agape agglomeration agglutination aggregation agreement alignment alliance allying amalgamating amalgamation amity ankle anschluss apposition approximation appulse articulation assemblage assent assimilation associating association axis band bed blend blending bloc body bond bond of matrimony bonds of harmony boundary bracketing bridebed brotherhood brotherly love butt cabal cahoots caritas cartel cement of friendship centralization cervix charity chorus circle clinch closeness closure club clustering co-working coaction coadunation coalescence coalition cohabitation coherence coincidence collaboration colleagueship collectivity college collegialism collegiality collusion combination combine combined effort combining combo common market communication communion community community of interests compatibility composition comradeship concatenation concert concerted action concomitance concord concordance concourse concurrence confederacy confederating confederation confluence conformance conformation conformity confraternity congeniality congeries conglomeration congress congruence congruency congruity conjoining conjugal bond conjugal knot conjugation conjunction connectedness connecting link connecting rod connection consilience consistency consolidation consonance consort consortium conspiracy consumer cooperative conterminousness contiguity contrariety convergence cooperation cooperative cooperative society copartnership copartnery copulation corps correspondence coterminousness council coupling coverture credit union customs union dealings deduction disjunction dovetail economic community ecumenism elbow embodiment embrace empathy encompassment enosis equivalence esprit esprit de corps federalization federation feeling of identity fellow feeling fellowship filiation fraternalism fraternity fraternization free trade area freemasonry frictionlessness fusing fusion gang gathering gliding joint good vibes good vibrations graft group grouping guild happy family harmoniousness harmony hinge hinged joint hip holy matrimony holy wedlock homology hookup husbandhood identification identity ill-assorted marriage inclusion incorporation integration intercommunication intercourse interface interlinking intermarriage interracial marriage intersection intimacy join joinder joining joint jointure junction juncture junta juxtaposition kinship knee knotting knuckle league liaison like-mindedness link linkage linking love machine marriage marriage bed marriage sacrament marrying match matrimonial union matrimony meeting meld melding mergence merger merging mesalliance misalliance miscegenation miter